package com.arui.config;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.parser.ParserConfig;
import com.alibaba.fastjson.serializer.SerializerFeature;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;

import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.Objects;

/**
 * @description: redis 序列化器
 * @author: zyr
 * @date: 2024/3/29 15:29
 */
public class FastJsonRedisSerializer<T> implements RedisSerializer<T> {
    private static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;
    private final Class<T> clazz;
    static {
        ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
    }
    public FastJsonRedisSerializer(Class<T> clazz) {
        super();
        this.clazz = clazz;
    }
    @Override
    public byte[] serialize(T t) throws SerializationException {
        if (Objects.isNull(t)) {
            return new byte[0];
        }
        return JSON.toJSONString(t, SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);
    }

    @Override
    public T deserialize(byte[] bytes) throws SerializationException {
        if (Objects.isNull(bytes) || bytes.length == 0)  {
            return null;
        }
        return JSON.parseObject(new String(bytes, DEFAULT_CHARSET), clazz);
    }
}
